| Patents for E21B 29 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground (5,744) |
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| 03/14/2001 | EP0677135B1 Method and apparatus for setting a whipstock |
| 03/13/2001 | US6199635 Shifting apparatus and method for use in tubular strings for selective orientation of tubular strings below the shifting apparatus |
| 03/08/2001 | DE4118481C2 Absperrgerät für Flüssigkeiten und Gase in Rohren Shut-off device for liquids and gases in pipes |
| 03/07/2001 | EP1080296A1 Deformable liner tube |
| 03/01/2001 | WO2001014090A2 Explosive pipe cutting device |
| 03/01/2001 | CA2382027A1 Explosive pipe cutting device |
| 02/21/2001 | EP1076758A2 A method for the formation of a plug in a petroleum well |
| 02/20/2001 | US6189616 Expandable wellbore junction |
| 02/13/2001 | US6186234 Removal of lining from tubing |
| 02/13/2001 | US6186233 Down hole assembly and method for forming a down hole window and at least one keyway in communication with the down hole window for use in multilateral wells |
| 02/13/2001 | US6186226 Borehole conduit cutting apparatus |
| 02/08/2001 | WO2001009481A1 Anti-rotation device for use with well tools |
| 02/08/2001 | WO2001009480A1 Anti-rotation device for use with well tools |
| 02/07/2001 | EP1073825A1 Foldable tube |
| 02/06/2001 | US6183165 Process and device for separation of pipes or columns fixed in the ground |
| 01/27/2001 | CA2314622A1 Reuseable cutting and milling tool |
| 01/24/2001 | EP1070194A1 A mill and a method for milling |
| 01/23/2001 | US6176327 Method and toolstring for operating a downhole motor |
| 01/18/2001 | DE10028015A1 Adding a liner to a borehole by inserting liner on a mandrel, injecting liquid between the liner and the borehole and expanding the liner onto the wall |
| 01/17/2001 | EP1068425A1 Drillstring with stabilisers for re-entering a primary wellbore |
| 01/17/2001 | CN2415157Y Low-frequency oscillating blocking removing device |
| 01/09/2001 | US6170576 Mills for wellbore operations |
| 01/04/2001 | WO2000053887A3 Wellbore primary barrier and related systems |
| 01/02/2001 | US6167961 Small diameter run in whipstock and method for setting in large diameter casing |
| 01/02/2001 | US6167958 Cutting matrix and method of applying the same |
| 12/07/2000 | WO2000050729A3 Mills for wellbore operations |
| 12/07/2000 | CA2310878A1 Lubrication and self-cleaning system for expansion mandrel |
| 12/05/2000 | US6155349 Flexible wellbore mill |
| 12/05/2000 | US6155344 Downhole tool connection for live well deployment |
| 12/05/2000 | US6155343 System for cutting materials in wellbores |
| 11/28/2000 | US6152229 Subsea dual in-line ball valves |
| 11/23/2000 | WO2000070183A1 In-tubing wellbore sidetracking operations |
| 11/18/2000 | CA2272142A1 Downhole milling tool |
| 11/16/2000 | WO2000037766A3 Procedures and equipment for profiling and jointing of pipes |
| 11/14/2000 | US6145593 Main bore isolation assembly for multi-lateral use |
| 11/09/2000 | WO2000066877A1 Ribbed sealing element and method of use |
| 11/09/2000 | WO2000066876A1 Borehole conduit cutting apparatus |
| 11/08/2000 | EP1049852A1 Milling system and method in a wellbore |
| 11/07/2000 | US6142230 Wellbore tubular patch system |
| 11/02/2000 | WO2000065194A1 Controlled breaking of cables in a well casing |
| 11/02/2000 | EP1047860A1 Apparatus and method for milling through a whipstock in a wellbore |
| 11/02/2000 | CA2367744A1 Controlled breaking of cables in a well casing |
| 10/31/2000 | US6138756 Milling guide having orientation and depth determination capabilities |
| 10/26/2000 | WO2000063521A1 Method and apparatus for accurate milling of windows in well casings |
| 10/26/2000 | WO2000037767A3 Profile formation |
| 10/26/2000 | CA2536620A1 Expandable connector for borehole tubes |
| 10/25/2000 | EP1045958A1 A drill pipe and method of forming and reconditioning a drill pipe |
| 10/24/2000 | US6135215 Tool string apparatus for lateral borehole formation |
| 10/24/2000 | US6135208 Expandable wellbore junction |
| 10/24/2000 | US6135206 Apparatus for completing a subterranean well and associated methods of using same |
| 10/19/2000 | WO2000061915A1 Method of creating a wellbore in an underground formation |
| 10/19/2000 | WO2000061908A1 Method of selective plastic expansion of sections of a tubing |
| 10/17/2000 | US6131675 Combination mill and drill bit |
| 10/17/2000 | US6131517 Method and apparatus for removing abandoned offshore fixed platforms |
| 10/05/2000 | WO2000058594A1 Whipstock casing milling system |
| 10/03/2000 | US6125949 Method of and apparatus for horizontal well drilling |
| 10/03/2000 | US6125929 Casing cutter blade support sleeve |
| 10/03/2000 | US6125928 System for controlling and stopping oil drilling fires |
| 09/27/2000 | CN1268206A Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit |
| 09/26/2000 | US6123150 Branch boreholes |
| 09/20/2000 | EP1036915A1 Method and device for controlling the deformation of an unrolled metal pipe |
| 09/14/2000 | WO2000053887A2 Wellbore primary barrier and related systems |
| 09/13/2000 | EP1034354A1 Mill for use in a wellbore and method of milling |
| 09/12/2000 | US6116344 Apparatus for completing a subterranean well and associated methods of using same |
| 09/12/2000 | US6116336 Wellbore mill system |
| 09/12/2000 | CA2143349C Flow control sub for hydraulic expanding downhole tools |
| 09/11/2000 | CA2607830A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2607565A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2607070A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2606444A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2300363A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/06/2000 | EP0528801B1 Pipe bursting and replacement apparatus and method |
| 09/05/2000 | US6112812 Wellbore milling method |
| 08/31/2000 | WO2000050797A1 Improved eduction process |
| 08/31/2000 | WO2000050729A2 Mills for wellbore operations |
| 08/31/2000 | WO2000050727A1 Horizontal drilling method and apparatus |
| 08/31/2000 | DE19859928C1 Verfahren und Schutzrohr zum Erneuern einer im Erdreich verlegten Rohrleitung Method and ducting for renewing a pipeline laid in the ground |
| 08/29/2000 | US6109347 One-trip, thru-tubing, window-milling system |
| 08/22/2000 | US6105675 Downhole window milling apparatus and method for using the same |
| 08/22/2000 | US6105673 Patching of injection and production well annular casing leaks for restoring mechanical integrity |
| 08/15/2000 | US6102123 One trip milling system |
| 08/15/2000 | US6102120 Zone isolation tools |
| 08/01/2000 | US6095247 Apparatus and method for opening perforations in a well casing |
| 07/29/2000 | CA2297595A1 Flexible swage |
| 07/26/2000 | EP1022430A1 Method of destruction of a rigid thermal insulation positioned within a confined space |
| 07/25/2000 | US6092601 Apparatus for completing a subterranean well and associated methods of using same |
| 07/21/2000 | CA2297136A1 One-trip window milling apparatus & method with measurement-while-drilling |
| 07/13/2000 | DE19958399A1 Brunnenbohrungsverschalung Wellbore casing |
| 07/05/2000 | EP1015731A1 Cutting insert and milling tool for use in a wellbore |
| 07/05/2000 | CN2386186Y Compound grinding milling cylinder |
| 06/29/2000 | WO2000037773A1 Downhole sealing for production tubing |
| 06/29/2000 | WO2000037772A1 Tubing anchor |
| 06/29/2000 | WO2000037771A1 Drilling method |
| 06/29/2000 | WO2000037768A1 Method and apparatus for expanding a liner patch |
| 06/29/2000 | WO2000037767A2 Profile formation |
| 06/29/2000 | WO2000037766A2 Procedures and equipment for profiling and jointing of pipes |
| 06/29/2000 | CA2686423A1 Method and apparatus for drilling and lining a wellbore |
| 06/29/2000 | CA2646563A1 Tubing anchor |
| 06/29/2000 | CA2565202A1 Downhole sealing for production tubing |
| 06/28/2000 | EP1013874A2 Device and method for the replacement of tubes |